Babies do not know a lot of things, which is why they need constant supervision, but one Seattle Mariners fan let his infant find out through trial and error that baseballs are not edible.
This seems like fun to the man and his friends, but the baby's mother probably would prefer she not put a game-used baseball in her mouth.
In the dad's defense it is adorable to watch.
GALLERY: CHILDHOOD PHOTOS OF ATHLETES
- Brendan Maloy